The second Yff triangle is the Cevian triangle 
of the second Yff
point. The area of the second Yff triangle is
 |
where 
is the circumradius of the reference
triangle. This is the same area as the first
Yff triangle.
Second Yff Triangle
See also
First Yff Triangle, Yff Central Triangle, Yff Contact Triangle, Yff PointsExplore with Wolfram|Alpha
References
Yff, P. "An Analog of the Brocard Points." Amer. Math. Monthly 70, 495-501, 1963.Referenced on Wolfram|Alpha
Second Yff TriangleCite this as:
Weisstein, Eric W. "Second Yff Triangle." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/SecondYffTriangle.html